Journal
ULTRASOUND IN MEDICINE AND BIOLOGY
Volume 35, Issue 12, Pages 1973-1981Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ultrasmedbio.2009.07.004
Keywords
Carpal tunnel; Subsynovial connective tissue (SSCT); Speckle tracking; Velocity vector imaging (VVI); Shear index; Relative motion; Ultrasound
Funding
- NIH [AR49823]
- NCRR [RR024152]
- NATIONAL CENTER FOR RESEARCH RESOURCES [TL1RR024152] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF ARTHRITIS AND MUSCULOSKELETAL AND SKIN DISEASES [R01AR044391, R01AR049823] Funding Source: NIH RePORTER
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The objective of this study was to compare tissue Doppler imaging and speckle tracking ultrasound to assess the relative motion of flexor tendon and surrounding subsynovial connective tissue (SSCT). Twenty normal human wrists were imaged with an ultrasound scanner. The two ultrasound methods measured the excursion and maximum velocity of the tendon and SSCT while subjects gripped three different sized acrylic tubes and these were correlated with tendon excursions estimated from finger joint angle changes. The maximum velocity ratio (=SSCT/tendon velocity) and the shear index (=(Tendon excursion-SSCT excursion)/Tendon excursion]x100%) were calculated. The intraclass correlation coefficient was higher for joint angle/speckle tracking tendon excursion (0.642) than for joint angle/tissue Doppler excursion (0.377). The speckle tracking method could also discriminate differences in maximum velocity ratio and shear index for different tube sizes. We conclude that speckle tracking may be useful in assessing the relative motion of tendon and SSCT. (E-mail: pamadio@mayo.edu) (C) 2009 World Federation for Ultrasound in Medicine & Biology.
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